A C++ class to abstract OpenGL frame buffer objects. More...

#include <frameBufferObject.h>

Inheritance diagram for eq::util::FrameBufferObject:

Collaboration diagram for eq::util::FrameBufferObject:

Public Member Functions
	FrameBufferObject (const GLEWContext *const glewContext, const unsigned textureTarget=0x84F5)
	Construct a new Frame Buffer Object. More...

	~FrameBufferObject ()
	Destruct the Frame Buffer Object. More...

bool	addColorTexture ()
	Add one color texture to the FBO. More...

bool	init (const int32_t width, const int32_t height, const unsigned colorFormat, const int32_t depthSize, const int32_t stencilSize)
	Initialize the Frame Buffer Object. More...

void	exit ()
	De-initialize the Frame Buffer Object. More...

void	bind ()
	Bind to the Frame Buffer Object. More...

void	unbind ()
	Unbind any Frame Buffer Object and use the default drawable for the current context. More...

bool	resize (const int32_t width, const int32_t height)
	Resize the FBO. More...

int32_t	getWidth () const

int32_t	getHeight () const

const Textures &	getColorTextures () const

const Texture &	getDepthTexture () const

const eq::fabric::Error &	getError ()

const GLEWContext *	glewGetContext () const

bool	isValid () const

Detailed Description

A C++ class to abstract OpenGL frame buffer objects.

Definition at line 32 of file frameBufferObject.h.

Constructor & Destructor Documentation

eq::util::FrameBufferObject::FrameBufferObject	(	const GLEWContext *const	glewContext,
		const unsigned	textureTarget = `0x84F5`
	)

Construct a new Frame Buffer Object.

Version: 1.0

eq::util::FrameBufferObject::~FrameBufferObject ( )

Destruct the Frame Buffer Object.

Version: 1.0

Member Function Documentation

bool eq::util::FrameBufferObject::addColorTexture ( )

Add one color texture to the FBO.

The first color texture is automatically created in the constructor. The maximum number of textures per FBO is 16. Added color textures will have the same format as the existing texture(s). This method has to be called on an uninitialized FBO.

Returns: false if color texture can't be added, otherwise true.

Version: 1.0

void eq::util::FrameBufferObject::bind ( )

Bind to the Frame Buffer Object.

The FBO becomes the read and draw buffer of the current context.

See Also: getError()

Version: 1.0

void eq::util::FrameBufferObject::exit ( )

De-initialize the Frame Buffer Object.

Version: 1.0

const Textures& eq::util::FrameBufferObject::getColorTextures ( ) const

inline

Returns: the vector of color textures.

Version: 1.0

Definition at line 115 of file frameBufferObject.h.

const Texture& eq::util::FrameBufferObject::getDepthTexture ( ) const

inline

Returns: the depth texture.

Version: 1.0

Definition at line 118 of file frameBufferObject.h.

const eq::fabric::Error& eq::util::FrameBufferObject::getError ( )

inline

Returns: the reason for the last failed operation.

Version: 1.0

Definition at line 121 of file frameBufferObject.h.

int32_t eq::util::FrameBufferObject::getHeight ( ) const

inline

Returns: the current height.

Version: 1.0

Definition at line 111 of file frameBufferObject.h.

int32_t eq::util::FrameBufferObject::getWidth ( ) const

inline

Returns: the current width.

Version: 1.0

Definition at line 107 of file frameBufferObject.h.

const GLEWContext* eq::util::FrameBufferObject::glewGetContext ( ) const

inline

Returns: the GLEW context.

Version: 1.0

Definition at line 124 of file frameBufferObject.h.

bool eq::util::FrameBufferObject::init	(	const int32_t	width,
		const int32_t	height,
		const unsigned	colorFormat,
		const int32_t	depthSize,
		const int32_t	stencilSize
	)

Initialize the Frame Buffer Object.

On successful initialization, the FBO is bound.

Parameters

width	the initial width of the rendering buffer.
height	the initial height of the rendering buffer.
colorFormat	The internal color texture format, e.g., GL_RGBA.
depthSize	The bit depth of the depth attachment.
stencilSize	The bit depth of the stencil attachment.